Thanks everyone, lots of interesting things to think about.
Indeed, new channels don't actually affect me as long as liquidity is on their side. And when they start having some of my liquidity on them, i should decide if this is really a problem for me, and what i will do to limit it it if it is. The problem i was seeing is that if there are too much remote channels, thay could each potentially stuck my liquidity on them, unbalancing the other channels i carefully selected to be somewhat orcanically rebalancing as long as they have balanced liquidity
I think i will start by modifying my peer selection tool, to not only find interesting new peers, but also evaluate which existing peers are not interesting enough. So i can close some channels or reallocate their balance to other ones.
By then it should be clearer in my mind what i should do each time i have new funds to put on LN