The MkIV Escort was the best selling car in the UK for many years - just because people liked it, doesn't mean it was actually any good.
I'm actually pleased for you that you've found something you like, but you're missing the whole point of it - it was a cheap barge, to go out and spend more than the purchase price on tightening up the baggy suspension is a bloody foolish thing to do - it's constantly moving target - you start off doing the bits you think need doing now, then think 'well, I've spent this much, so I may as well do these bits as well' etc, etc.
Enjoy it for what it is, don't spend lots of money trying to make a leggy old shed near perfect.