Thanks for the questions Pazx.
Regarding your concern about Lylat, it very much is a worry about opinion. If you were to ask me, I think Lylat's tilting is more detrimental to the strategy of player vs. player gameplay than Halberds hazards. Because there appear to be a large number of people concerned about both stages, that is why we are tentative to put them in if many are just going to waste their precious round one strikes on staving off hazards then making the in-game Match-Up better for themselves. I definitely encourage players to learn and get comfortable with both stages, and trialling them as starters may do that. However, you can't force people to come to a conclusion and if a large portion deem these stages too volatile for a starter, then I believe that's decent reason to remove them.
Regarding forced strikes, my point includes the idea that you are always going to have some stages that are forced strikes in some MU's. And the stages that might never be that way, may not be the same ones that are also deemed standard and non-hazardous enough to be starters in the first place. Forced strikes don't necessarily wield a flawed outcome. with 3 stages, if I'm forced to strike FD and the other player is forced to strike Battlefield, it doesn't matter. As long as the remaining stage is relatively neutral for the two characters, the purpose has been achieved. Duck Hunt is polarising for Sonic. FD for Little Mac. T&C for Diddy. Eventually we would not end up having a starter. As Venks' video link suggests, by having a balance of stages that cater to different groups of characters, they should reach a place that is not particularly advantageous to either, even if there are forced strikes. Some people including myself believe it is easier to get a balance of stages that will land on a more neutral stage in many MU's with 3, rather than 5 stages. Hopefully we can trial both.
Creating the starter list from the largest number of non-redundant stages that are also not deemed too hazardous would be ideal, yes. This is what should be strived for, however we feel a lot of the stages are hazardous and there is some redundancy in what is left over. Hopefully we can make progress on this!
Also, I hope you aware that in having unique and non-redundant stages, there will naturally be more polarising stages in some Match-ups. This means more 'forced-strikes' in these matchups. Hopefully this helps you to further see why forced-strikes don't need to be avoided in able to achieve what is best for the starter stage.
There is a case for Kongo 64 being the most effective place to circle camp out of the starters. I'm personally unsure if this will be permanent but I don't think the idea for removing it is something worth laughing at. You have to understand we are just doing things in a way that is less forgiving towards stages short-comings than you may be.
Additionally, just because it is potentially starter material if it were legal does not mean it is not also a candidate for being banned. The stage is non-redundant, and not that hazardous, so it is a great candidate for starters. However it has a prominent feature which may be considered outside of the nature of the game - strong circle camping. Depending on how effective you think the circle camping on the stage is, it could very quickly shift from being a starter, all the way to banned.
Disclaimer though, if we were to add it back, it probably wouldn't be a starter, but it would depend. I personally think it should be, because with unique it's vertical space it provides something very different to other legal stages.