Poacher
Regular
I don't think it was.
The point of the poll tax was to replace the Rates system which was unwieldy and heavily biased. It was supposed to be a small supplemental tax. The problem was that renters could get away without paying it, and the 20%/100% split was badly administered. You paid 100% if you were in employment, 20% if not. Councils had to pursue defaulters but didn't have the resources to do it. Opposition built, the riots happened. The ultimate result was that Major reversed the policy and introduced Council Tax which many would argue is far more costly and is still unfair/unbalanced.
While I'm broadly in agreement with most of your points, I don't remember the Community Charge / Poll Tax being a "small supplemental tax"; it replaced Rates and needed to raise a similar amount of income. You're certainly correct about councils not having resources - here in Nottingham we had "Ted Hughes" and "Sylvia Plath" co-habiting and never paying a penny! Apart from the 20% tax demanded from students and the unemployed, 100% was demanded from those working part-time on minimum wage (Whoops! not introduced until 1999) and exactly the same amount from millionaires. No wonder there were riots!
Council Tax is far from perfect, but is arguably more equitable and certainly easier to administer. It should have had more than 8 bands, and there's good reason to remedy this with an increase to 12 or more bands to extend the top end. This could be relatively straightforward, with no need for a complete re-evaluation exercise, just concentrate on the relatively small number of properties (in most council areas!) in Band H, and bear in mind that the tax on a Band H property is only three times that on a Band A.